Method of making covered paper boxes



H. B. SMITH.

METHOD OF MAKING COVERED PAPER BOXES. APPLICATION FILED DEC-20, 1920.

1,386, v Patented Aug. 2, 1921.

Har yB. Smith, 351 i abtomm s UNITED STATES HARRY BRIDGMAIN SMITH,

PATENT OFFICE.

OF BROOKLYN, NEW YORK.

METHOD or MAKING COVERED PAPER BOXES.

Specification of Letters Patent.

Patented Aug. 2, 1921.

Application filed December 20, 1920. Serial No. 431,910.

application Serial No. 254,630, filed Sept. 1

18, 1918; with certain additions, as sufficiently explained hereafter.

he invention relates in general to the art of making covered boxes of paper and similar materials, and a particular object is to provide an entirely new method of making such boxes by first assembling a. sheet of box-body or shell material and a sheet .of cover or wrapper material, with certain adhesive connections between the sheets, folding the combined assembly into box form, and finally securing it in that condition.

My application Serial No. 370,180 above mentioned, discloses a method and mechanism for depositing adhesive upon .the sheet of cover material by offset from an adhesively coated surface of the shell materialf that is, in a. particular example, the shell sheet or blank is coated on one face with adhesive and then placed upon the sheet or blank of cover material, and parts of. the two sheets thus brought into adhesive con tact are afterward separated, thereupon ex- 1 posing adjacent surfaces coated with adhesive, of which the surfaces of the cover material were coated bycontact, or offset, with adhesive-coated surfaces of the shell; and the separated surfaces "are brought together again after the assembly is. folded into approximately complete box form.

My application Serial No. 254,630 above mentioned, discloses a method and apparatus for effecting an assembly for the described purpose, either by bringing a complete box shell blank into flatwise contact with a complete cover blank, or by making the assembly of the shell and cover material by bringing together continuous webs of material and afterward cuttingthem apart and folding them into box form. A

The present application includes the offset adhesive applying method disclosed in the one application, in connection with the general method of box-making to which both of the prevlous applications relate, and shows its adaptation to the method of continuous or web assembly disclosed in the other previous application.

The two previous applications fully scribe the conditions in the box-making art upon which the present invention is based. The present invention includes the general ob ectS and advantages mentioned in those appllcations, but its object is more particuarly to improve and simplify the method of applying adhesive, and to improve and simplify the method of manipulating the shell and cover parts in view of the improvement in the mode of adhesive application.

To this end, the invention provides for bringing together a sheet of shell material and a sheet of cover material, either separately and completely formed, or in contlnuous form, that is, with the sheets of material supplied continuously from rolls, with adhesive between the sheets. No attempt is made to keep separate or hold apart portions of the assembly to prevent the application of adhesive to'one of the sheets by contact with the other; but on the contrary the sheets are intentionally brought into contact over substantially their entire areas, as stated, and this permits, in a preferred embodiment of the invention, the ap plication of adhesive to portions of one of the sheets by first applying adhesive to a surface of the othersheet, and then bringing the sheets together, usually in substantially flat condition, as previously described.

In the course of subsequent operations by which the assembly is folded into box form, usually involving the insertion of certain parts of the assembly between certain portions of the shell and cover sheets, certain contacting portions of the shell and cover sheets are separated or pulled apart, leaving the surfaces of such portions of one of the sheets supplied with adhesive by contact with the adhesively coated surface of the other sheet, that is, by what is conveniently called for descriptive purposes, offset contact.

After the proper bending or folding of the assembly into approximately complete box form the separated portions of the two sheets are again brought together, either in contact with each other or in contact with other infolded portions of the assembly, or both.

The complete method in some cases involves other or ,additional steps, and these and other characteristics and advantages of the invention are best understood in connection with a detail description of the method as performed in certain representative ways. These representative performances of the method will now be explained in connection with the accompanying drawing, which shows box parts in different manipulative positions, with fragmentary details of implements which may be conveniently, although not necessarily, used in the performance of certain steps of the process.

Figure 1 is a perspective view of box shell blanks, before and after application of a suitable adhesive pattern to one side of the blank.

Fig. 2 is a perspective view showing the under surface of the blank coated with adhesive.

Fig. 3 is a perspective view of the shell blank in opposed relation to a cover blank, before the two blanks are brought into assembly contact, with certain separating devices in approximate pre-assembly position.

Fig. 4 is a perspective view of the two blanks after initial assembly with representative blank-portion separating devices in position.

Fig. 5 is a perspective view of the assembly, with end-wings of the shell and cover blanks, respectively, separated, showing adhesive applied by offset to end-wing surfaces of the cover-blank, the assembly being in partly folded condition.

Fig. 6 is a perspective view of the assembly with corner laps in position.

Fig. 7 is a similar view of the assembly with the cover end wings brought back into proximity to the shell end wings.

Fig. 8 is a similar view showing marginal portions of the cover end wings turned inward horizontally, the box being in completed condition except for the final downward" folding of the marginal portions against the inner surfaces of the shell end wings.

Fig. 9 is a perspective view illustrating the continuous or web method of initial assembly of shell and cover material.

Fig. 10 shows a portion of the continuous assembly cut off and ready for stripping and folding.

Fig. 11 shows the assembly of Fig. 10 with end wings separated to show the offset application of adhesive to their surfaces.

Fig. 12 shows the completed box part produced either by the separate blank assembl or continuous web assembly method.

ig. 2 shows a complete body or shell X of cover material, conveniently supplied in a similar "way, to form a continuous strip Y of assembled materials. In the first instance, the materials are adapted for what may be conveniently termed separate or blank, assembly, and in the second instance, they are adapted for continuous or web assembly. In either case, either the shell or cover material may be identified for the purpose of inclusive description, as a sheet of shell or cover material, as the case may be. When more particularly described, in the separate method, the shell or body material may be referred to as a blank, and in the case of continuous assembly, the cover or shell material, as the case may be, may be referred to as a strip or web, and the combined sheet in the continuous method may be described, before severin as astri or web-assembl 7 In either case, after certain operations the parts are arranged for further manipulation by separating, folding, etc., in substantially the same condition, as shown in either Fig. 4: or Fig. 10. The separate method as exemplified in Figs. 1 to 8 and 12 will first be explained. N

Fig. 1 shows, below, a complete shell blank before application of adhesive, this blank consisting usually of cardboard of greater or less thickness, as may be suitable for boxes of the character desired. The blank comprises a body portiona, side wings I), end wings a, and corner laps d, usually formed or; the ends of the side wings, and

' preferably the inner endsofthe corner laps are cut away diagonally at e. The blank may be creased or scored along the lines f to facilitate subsequent bending. Adhesive is applied to portions of the upper face of this blank, as shown in the upper position of Fig. 1, this adhesive application being usually in the form of stripes 9 along outer margins of the side wings and the adjacentends of the corner laps and other stripes 72. along the outer margins ofthe end wings. Adhesive is also applied to the under surface of the blank as shown in Fig. 2 producing an adhesive or glue-coated surface 11 which may be the entire under surface of the blank; although, as sufiiciently explained in a companion application executed on even date herewith, it is suflicient in certain cases that only certain areas of the bottom surface of the shell be coated.

Fig. 3 shows a suitable cover blank C which is usually of paper, and usually thinner than the shell material, and of a suitable quality to provide a complete covered 'sary in a box of the gin of the wing and pull longer than the shell wings for reasons later explained.

Fig. 3 also shows a shell blank S arranged above the cover blank, ready for application to it, with separating devices 1, consisting conveniently of thin fiat metal strips, arranged between the blanks and ready to separate central portions of the end wings of the respective blanks when the latter are brought together.

The shell blank is then applied flat-wise to the cover blank, as shown in Fig. 4, and all of the adhesively coated under surface of the shell blank adheres to the upper surface of the cover blank, except certain longitudinally central areas of the end wings, which are separated by the separating strips 1. In this blank contact, adhesive is applied by off-set from the shell blank to all portions of the cover end wings except those portions which are protected by the separating strips, and also, of course, to all other parts of the cover blanks with which adhesively-coated surfaces of the shell blank are in contact. I

The outwardly extended marginal portions of the cover side wings are now folded over upon the glued margins g ofthe shell side wings, towhich they adhere and a complete covered box blank assembly is produced, as shown in Fig. 4.

The insertion of separating strips 1 is not essential in the method, in its broader aspect, but these strips provide conveniently for subsequent manipulation of end wing portions of the respective blanks in one performance of the process, as well as preventing application of glue to certain parts of the cover end wings, where glue is unnecesparticular kind here shown. 1

The shell end wings are now separated or stripped away from the cover end wings, as. shown in Fig. 5, and conveniently this may be done by gripping devices, comprising grippers 2 and 3, of which a part of gripper 2 lies under the margin of the shell end wing and is accommodated by a slot 4 in the separating strip 1, and member 3 then.

cooperates with member 2 to grasp the marit up, away'from the cover end wing, while the latter is held down by the separating ,strip. The shell end wings are then held up b suitable devices, such as rods 5, Fig. 5, w ile the cover end wings are held down 'by devices, such as fingers 6 carried by bars 7. The side wings of the assembly are then folded up ,to the bly contact of the Webs,

position shown in Fig. 5, and the corner laps are folded in against the margins of the adhesively-coated endwings of the shell, this in-folding being conveniently accomplished by plates or fingers 8. The corner laps thereupon adhere to outer surfaces of the shell end wings.

While the box assembly blank is being formed or folded into shape, it is usually associated with a form or plunger having the general shape of the inside of the completed box part. A showing of this plunger is omitted for the sake of clearness. The box assembly after the described operations is in the condition shows in Fig. 6. The cover end wings are now folded up against the ends of the assembly and surfaces 19 which have been glued by previous ofl'set contact with the shell blank are caused to adhere to outer surfaces of the cornerlaps, and the central uncoated portions of the cover end wings are caused to adhere to the glued surfaces of the shell end wings, the parts being suitably pressed into position. The assembly is then in the condition shown in Fig. 7. The up-standing marginal portions of the cover end wings are then first turned inward, as shown in Fig. 8, and

then turned down and pressed against the glued margins h of the shell end wings, producing a complete box part, as shown in Fig. 12, which is characterized by the entire absence of raw edges, that is, uncovered exposed edges of the box shell, since every portion of the shell except its lower inner side surfaces and inner bottom surface, and includlng all'edges, are completely covered by the cover paper, applied in the manner described.

Figs. 9, 10 and 11 exemplify the continu ous or web assembly method. A continuous strip W of the shell material is fed, convenlently from a roll, into contact with a continuous strip Xof cover material wider plied to a surface of one ofthe strips, usually, most conveniently, to'the upper surface of cover web X, as shown, before the webs are brought in contact. The shell web is also perforated at intervals before assemproviding suitable holes t, usually of rectangular shape, spaced apart a distance equal to the length of the deslred web-assembly. Previous to assembly contact of the webs the shell web is creased or scored along the lines f, correspondin to llnes along which the assembly is to be folded; or this scoring on creasing may be done after assembly contact of the two webs, as more particularly shown in Fig. 9. As the webs advance, adhesively secured together, the marginal pprtions u of the cover blank are folded inward upon the side marglns of the shell web and pressed down, and the adhesively-coated surfaces of the cover holes 25 of the shell, and these connections are severed transversely midway between the adjacent ends of the" shell material, producing an assembled box blank as shown in Fig. 10, generally identical with the assembly produced by the separate or blank method of production previously described. This assembly-blank differs, however, from the assembly of Fig. ft, in the fact that the projecting margins of the cover end-wings have their upper surfaces covered with adhesive w, forming a continuation of the main ad-' hesive-coated surfaces '20 of these wings as shown in Fig. 11, this marginal adhesive coating being applied inthe original application of adhesive to the entire upper surface of the cover web, as'before described. This method of applying adhesive, therefore, avoids any necessity for applying adhesive stripes to marginal portions of the upper shell surface, as in the particular separate assembly method previously described.

cover.

This assembly blank is made into box form by first separating the end wings a and Z of the shell and cover respectively, whereupon the surfaces of the shell previously in contact with the cover end wings are found to be covered with adhesive, applied by .oifset from coated surfaces of the The side wings are then bent up, and the corner laps bent in against the coated'surface of the shell end wings, and pressed in position, and the cover end wings are then brought up and their inner adhesive surfaces are pressed against the outer surfaces of the corner laps and against the I intermediate portions of the shell end wings,

and the outer end structure of the box is thus completed by adhesive engagement; the upwardly extended margins of the cover end wings are then bent inward and downward and their adhesive surfaces to secured against inner surfaces of the shell endto different parts of the structure. By such a dimensional change, the corner laps will at the same time appear to be attached to the end wings, rather than to the side wings.

After considering the described perform ances of the method, persons skilled in the art will understand that many variations may be made in the completemethod, as well as in separate steps, and different subordinate sequences of steps; and I contemplate the use of any variations which are within the scope of the appended claims.

I claim:

1. A method of making boxes, comprising forming a box-blank assembly consisting of a shell-sheet and a cover-sheet with engaging areas adhesively coated, separating certain portions of the sheets and shaping the blank into box form and during the shaping inserting certain parts of the blank between said separated portions, and then bringing said separated portions back toward their previous assembly-positions,

with an adhesively coated surface of one of them in contact with said inserted portions.

2. A method of making boxes, comprising forming a box-blank assembly consisting of a shell-sheet and a cover-sheet with engaging areas adhesively coated, separating certain portions of the sheets before the adhesive has set and shaping the blank into box form and during the shaping inserting certain parts of the blank between said separated portions, and then bringing said separated portions back toward their previous assembly-positions, with an adhesively coated surface of one of them in contact with said inserted portions.

3. A method of making boxes, comprising forming a box-blank assembly consisting of a shell-sheet and a cover-sheet with en gaging areas adhesively coated, separating certain portions of the sheets and shaping the blank into box form and during the shaping inserting certain parts of the blank between said separated portions, and then bringing said separated portions back toward their previous assembly-positions, with an adhesively coated surface of one of them in contact with said inserted portions, and finally inturning and securing marginal portions of the cover-sheet.

4. A method of making boxes, comprising forming a box-blank assembly consisting of a shell-sheet and a cover-sheet with engaging areas adhesively coated, separating.

certain portions of the sheets before the adhesive has set and shaping the blank into box form and during the shaping inserting certain parts of the blank between said separated portions, then bringing said separated portions back toward their previous assembly-positions, with an adhesively coated surface of one of them in contact with said inserted portions, and finally inturning or similar materials corner laps between the separated wings,

I with the corner laps and bringing the end wings back toward each other with adhesive surfaces of the separated wings in contact with the corner la s.

23. A method of making boxes of paper or similar materials, comprising forming a box-like assembly having a body portion, side and end wings and corner laps and consisting of a sheet of shell material and a sheet ofcover material with adhesive between contacting surfacesof the shell and cover end wings, separating the shell end wings from the cover end Wings and folding the blank into a proximate box form between the shell and cover end wings, and bringing the end wings back toward each other with adhesive surfaces of the cover end wings in contact with the corner laps. 7. A method of making boxes of paper and similar materials, comprising forming a box-blank assembly consisting of a shell-sheet and a cover sheet having adjacent surfaces in adhesive engagement, marginalportions of the cover sheet being folded over and adhesively secured to corresponding marginal portions of the inner surface of the shellsheet, separating certain of the adhesivelyengaged portions of' the shell and cover sheets to present free, adhesively-coated surfaces of said sheet portions, folding the blank into approximate box form with certain portions inturned and placed between the separated surfaces of the two sheets, and bringing the separated sheet portions back toward each other with adhesively coated portions of one of the sheets in contact with said inturned blank portions.

8. A method of making boxes of paper and similar materials, comprising forming a boxblank assembly consisting of [a shell-sheet and a cover sheet having adjacent surfaces in adhesive engagement, marginal portions of the cover sheet being folded over and adhesively secured to corresponding marginal portions of the inner surface of the shell-sheet, separating certain of the adhesively-engaged portions of the shell and cover sheets before their adhesive has set to present free, adhesively-coated surfaces of,

said sheet portions, folding the blank into approximate box form with certain portions inturned and placed between the separated surfaces of the two sheets, and bringing the separated sheet portions back toward each other with adhesively coated portions of one of the sheets in contact with said inturned blank portions.

9. A method of making boxes of paper and similar materials, comprising forming a boxblank assembly consisting of a shell-sheet and a cover sheet having adjacent surfaces in adhesive engagement, 'marglnal portions of the cover sheet being folded over and adhesively secured to corresponding marginal portions of the inner surface of the shellsheet, separating certain of the adhesivelyengaged portions of the shell and cover sheets to present free, adhesively-coated surfaces of said sheet portions, folding the blank into approximate box form with certain portions inturned and placed between the separated surfaces of the two sheets, bringing the separated sheet portions back toward each other with adhesively coated portions of one of the sheets in contact with said inturned blank portions, and finally infolding certain marginal portions of the cover-sheet and securing them to inner surfaces of the shell-sheet.

10. A method of making boxes of paper and similar materials, comprising forming a box blank assembly consisting of a shellsheet and a cover sheet having adjacent surfaces in adhesive engagement, marginal portions of the cover sheet being folded over and adhesively secured to corresponding marginal portions of the inner surface of the shell-sheet, other inner-surface margins of the shell-sheet being adhesively coated,separating certain of the adhesively-engaged portions of the shell and cover sheets to present free, adhesively-coated surfaces of said sheet portions, folding the blank into approximate box form with certain portions inturned andplaced between the separated surfaces of the two sheets, bringing the separated sheet portions back toward each other with adhesively coated portions of one of the sheets in contact with said inturned blank portion, and folding marginal portions of the cover-sheet inward in contact with said coated marginal portions of the shell-sheet.

'11. A method of making boxes of paper and similar materials, comprising forming a box-blank assembly consisting of a shellsheet and a cover sheet having adjacent'surfaces in adhesive engagement, marginal portions of the cover sheet being folded over and adhesively secured to corresponding marginal portions of the inner surface of the sively-coated surfaces of said sheet portions, folding the blank into aproximate box form with certain portions inturned and placed between the separated surfaces of the two sheets, bringing the separated sheet portions back toward each other and adhesively coated portions of one of the sheets in con tact with said inturned blank portions, and folding marginal portions of the cover-sheei inward in contact with said coated marginal portions of the shell-sheet.

12. A method of making boxes of paper and like materials, comprising bringing sheets of shell and cover material together with adhesive between them, temporarily separating portions of the shell and cover sheets adjacent surfaces of which bear adhesive previously applied, folding the assembled sheets partially into box form, infolding portions of the assembly between the adhesive surfaces of said separated portions, and bringing said separated portions into engagement with said infolded portions.

13. A method of making boxes of paper and like materials, comprising bringing sheets of shell and cover material together with adhesive between them, temporarily separating portions of the shell and cover sheets adjacent surfaces of which bear adhesive previously applied, folding the assembled sheets partially into box form,infolding portions of the assembly between the adhesive surfaces of said separated portions, andbringing said separated port-ions into engagement with saidinfolded portions to adhesively secure the infolded portions.

14:. A method of making boxes of paper and like materials, comprising bringing sheets of shell. and cover material together with adhesive between them, separating portions of said sheets which thereupon present adhesive-bearing faces, folding'the assembled sheets into approximate box form with portions interposed between saidfaces, and bringing said faces again toward each other. I

15. A method of making boxes of paper and like materials, co rising bringing sheets of shell and cover aterial together with adhesive between them, separating portions of said sheets which thereupon present adhesive-bearing faces, folding the assem bled sheets into approximate box form with' portions interposed between said faces, and brin 'ng said faces again toward each other toa hesively engage said interposed portions. l c

16. A method of making boxes of. paper and like materials, comprising applying adhesive to a surface of a sheet of box material, applying the adhesive-bearing surface of said sheet to a cooperative. sheet of-mate- I rial, separating portions of the sheets,where upon a surface of the cooperative sheet is exposed, supplied with adhesive by ofiset from the first named sheet, folding the assembled sheets into box form with portions interposed between the adjacent surfaces of said separated portions, and bringing saidseparated portions back into close proximity and adhesive engagement with said interposed portions.

17. A method of making boxes of paper and like material comprising applying adhesive to a surface ;of box shell blank, applying the adhesive bearing surface of said blank to a cover blank, separating portions of the blank whereupon. a surface of the cover blank is exposed bearing adhesive deposited by contact with the shell blank, folding the assembledblanks into box form with portions interposed between the adjacent surfaces of said separated-portions and bringing the adhesive surfaces of said separated portions again together in engagement with said interposed portions.

18. A method of making boxes of paper and similar materials, comprising preparing an assembly of a sheet of box shell material and a sheet of cover material with adhesive between them, the sheets having body portions, side and end Wings andcorner laps, all in contact, the cover sheet having outward marginal portions of its end wings extending beyond the shell end wings and outer marginal portions of its side wings folded over the edges of the shell side wings and adhesively secured -to the upper faces thereof, separatingwing portions of the shell and cover.

wings, bringing the separated wings together to adhesively engage the corner laps, and inturning the extendingni argins of the cover end wlngsand securing them adhes sively to inner surfaces of the shell end wings. f

19. In a method of making paper boxes in which a sheet of shell material and a sheet of cover material are brought together with contacting adhesively coated faces, the steps which consist inseparatin certain portions of the sheets to present ad acent adhesivelycoated surfaces, and bringing the adhesive surfaces together again after the assembly is golded up into approximately complete 'box orm.

20. In a method of making paper boxes and the like in which an assembly of a shell sheet and a cover sheet is folded into-box forfm,.the' steps which consist in depositing adhesive upon one of the sheets by offset contact with an adhesively coated face of the other sheet, separating certain contactand reengaging said surfaces after the assembly is in approximately complete box form.

21. In a method of making covered paper boxes, the steps which consist in adhesively stenciling a substantially flat box shell sheet on one face and applying adhesive over substantially the entire area of the other face, superposing the coated face of the shell sheet upon a substantially flat cover sheet, turning the marginal edges of the cover sheet over and adhesively aflixing such edges to stenciled portions of the shell sheet to provide a box forming assembly, then separating certain adhesively connected portions of the shell and cover sheets whereby an exposed surface of the cover sheet is provided with adhesive by offset from the cover sheet, and finally folding the assembly into box form.

22. In a method of making covered paper boxes, the steps which consist in applying adhesive over substantially the entire area of one face of a box shell sheet, then superposing the coated face of said sheet upon a substantially flat wrapper sheet to provide an assembly, then separating certain adhesively-connected portions of the two sheets gluing of the correspondto provide offset ing portions of the cover sheet, and finally foldin the assembly into box form.

23. "Tn a method of making covered paper boxes from a box shell sheet having a body portion and side and end wings and a cover sheet having side and end wings, the steps which-consist in' applying adhesive over substantially the entire area of one face of the shell sheet, then superposing the coated face of said sheet upon the cover sheet to cause the two to become adhesively connected and thus provide ,a box-forming assembly, then peeling the adhesively coated end wings of the cover and shell sheets to provide offset gluing on the cover sheet end wings, and finally folding the assembly into box form and reaflixing the previously peeled end wing. V s

24. The method of making boxes of paper and similar materials, comprising bringing a sheet of shell material and a sheet of cover material into face contact, the contacting face of one of the sheets being previously coated with adhesive, and interposing separators between portions of the sheets as they are engaged to prevent adhesive application to portions of the face of the uncoated sheet, separating portions of the'sheets adjacent to the separators and thus presenting surface portions of one of the sheets adhesively coated by offset from the previously coated sheet, folding the associated sheets into approximate box form with marginal portions of the combined sheets inserted between said separated portions, and completing the box-formation of the associated sheets.

25. A method of making boxes of paper and similar material, comprising adhesivel coating a surface of a box shell blank, bringing the adhesive surfaces of said blank in proximity to a surface of a cooperative box cover blank, placing separators between portions of the blanks and bringing the blanks together in adhesive contact, and then shaping the associated blanks into box form, said shaping involving the step of separating portions of the respective blanks adjacent to the separators to present surfaces of said separated portions of the cover blank coated with adhesive by offset from the shell blank, the extent of adhesive coating being limited by the separators.

26. The method of making boxes of paper and similar materials comprising forming a box blank assembly of a shell blank and a cover blank having adhesively supplied en gaging surfaces, the box blank having a body portion, side and end wings and corner laps, spacers being spaced between portions of the end wings of the shell and cover blanks in formation of the assembly, gripping edges of the shell end wings and stripping said wings away from the cover end wings, leavin portions of the cover wings coated with adhesive and other portions corresponding to the spacers uncoated, folding the box blank into approximate box form with the corner laps interposed between separated faces of theshell and cover end wings, and bringing the respective end wing portions back approximately together and completing the box formation of the blank assembly.

27. The method of making boxes of paper and similar materials, comprising bringing a sheet of shell material and a sheet 'of cover material into face contact, the contacting face of one of the sheets being coated with adhesive, and interposin apertured separators between portions 0 the sheets as they are engaged to revent adhesive application to portions of t e face of the uncoated sheet,

operating grippers which icoloperate with the apertured separators toseparate portions of the sheets adjacent to the separators and thuspresent surface portions of one of the sheets adhesively coated by offset from the previously coated sheet, folding the associated sheets into approximate box form with marginal portions of the combined sheets inserted between said separated portions, and completing the boxformation of a the associated sheets.

28. A method of making boxes of paper and similar material COIIIPIlSlIlg adhesively coating a surface of a box shell blank, brin ing the adhesive surfaces of said blank 1n proximity to a surface of a cooperative box cover blank, placing separators between portions of the blanks and bringing the blanks together in adhesive contact, and then shaping the associated blanks into box form, sald shaping involving the step of applying grippers in cooperation with said separators to separate portions of the respective blanks adjacent to the separators to present surfaces of said separated portions of the cover blank coated with adhesive by offset from the shell blank, the adhesive coating being limited by the separators.

29. The method of making boxes of paper and similar materials comprising forming a box blank assembly of a shell blank and a cover blank having adhesively supplied engaging surfaces, the box blank having a body portion, side and end wings and corner laps, spacers being spaced between portions of the end wings of the shell and cover blanks in formation of the assembly, operating gripping devices to strip said shell end wings away from the cover end wings, leaving ortions of the cover wings coated with ad esive and other portions corresponding to the spacers uncoated, folding the box blank into approximate box form with the corner laps interposed between separate faces of the shell and cover end wings and bringing the respective end wing portions back approximately together and completing 'the box formation of the blank assembly. Signed at New York city in the county of New York and State of New York, this 17th day of December, A. D. 1920.

HARRY BRIDGMAN SMITH. 

